private void initChunk() throws IOException { blockPointer = blockCursor.getBlockPointer(); streamOffset = 0; if (blockCursor.getBlockType() == Constants.PLAIN_BLOCK) { inputStream = new CountingInputStream(blockCursor.getInputStream()); return; } Preconditions.checkState(blockCursor.getBlockType() == Constants.FIRST_LZMA_BLOCK); startLzmaDecoder(true); }